Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-09-28
JHEP 0012 (2000) 009
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 5 figs, extended discussion of light stop case, notational improvements
Scientific paper
10.1088/1126-6708/2000/12/009
We discuss possible large contributions to B -> X_s gamma, which can occur at the next-to-leading order in supersymmetric models. They can originate from terms enhanced by tan(beta) factors, when the ratio between the two Higgs vacuum expectation values is large, or by logarithm of M_{susy}/M_W, when the supersymmetric particles are considerably heavier than the W boson. We give compact formulae which include all potentially large higher-order contributions. We find that tan(beta) terms at the next-to-leading order do not only appear from the Hall-Rattazzi-Sarid effect (the modified relation between the bottom mass and Yukawa coupling), but also from an analogous effect in the top-quark Yukawa coupling. Finally, we show how next-to-leading order corrections, in the large tan(beta) region, can significantly reduce the limit on the charged-Higgs mass, even if supersymmetric particles are very heavy.
Degrassi Giuseppe
Gambino Paolo
Giudice Gian F.
No associations
LandOfFree
B -> X_s gamma in supersymmetry: large contributions beyond the leading order does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with B -> X_s gamma in supersymmetry: large contributions beyond the leading order, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and B -> X_s gamma in supersymmetry: large contributions beyond the leading order will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-343090